Five four-week-old puppies have been stolen in a burglary in Basingstoke.
The thieves broke into a home in Barbel Avenue between Friday night and Saturday morning.
The three female and two male Staffordshire bull terriers are still too young to walk and could die without proper care, police warned.
A witness saw a woman in a fancy dress costume outside the house at about 0100 BST and at the same time a dog was heard crying.
A television and a laptop computer were also taken.
Det Con Pete Hanson, of Hampshire police, said: "We are keen to trace this woman, as well as anyone else who may have information regarding this incident and the whereabouts of the puppies.
"The family are devastated by their loss, especially as without proper care, the puppies may not survive."
Of the female puppies, one is blue brindle, one tiger brindle and the third one has tan legs and black patches on her body.
The two males are both white. One has a brown patch on his rear, brown marks on his back and a spot on his head, while the other has brindle patches on the eyes and patches on his back.